package dao.impl;

import dao.DeptDao;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import pojo.Dept;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;

public class DeptDaoimpl implements DeptDao{
    @Override
public List<Dept> findAll() {
    //定义核心配置文件
    String resource = "mybatis-config.xml";
    //加载配置文件
    SqlSession sqlSession=null;
    try {
        //流操作
        InputStream inputStream = Resources.getResourceAsStream(resource);
        //创建会话工厂
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        //创建会话
        sqlSession = sqlSessionFactory.openSession();
        //执行数据库操作
        List<Dept> depts = sqlSession.getMapper(DeptDao.class).findAll();
        return depts;
    } catch (IOException e) {
        throw new RuntimeException(e);
    }finally {
        sqlSession.close();
    }

}

}
